GE CLST M1A Lecture Notes - Lecture 8: Killer Whale, Primary Production, Chemosynthesis
20 Dec 2017
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Food, clothing, shelter, medicine, recreation, music, art----organism resources. Must harvest living organisms to secure these uses, harvesting must be sustainable. 6co2+6h2o+solar energy---c6h12o6+6o2 produces energy-containing organic matter from inorganic substances. 2 kinds: i) gross primary production: a rate of synthesis. Sues some energy to support own metabolism via respiration. Respiration here=the release of energy from chemical compounds to perform work (maintenance, growth, reproduction) C6h12o6+6o2--- ii) net primary production=gross: secondary production: net production gross secondary production-respiration. Expressed as a rate: kj/day pyramid of production: each trophic level cannot produce energy more than it consumes, and expends energy in respiration. Energy flow: the percentage of the energy used in respiration increases as the trophic level increases. There are no plants, they are bacteria that handle (cid:28679)(cid:28667)(cid:28664) (cid:28662)(cid:28674)(cid:28672)(cid:28675)(cid:28674)(cid:28680)(cid:28673)(cid:28663) (cid:28665)(cid:28677)(cid:28674)(cid:28672) (cid:28660)(cid:28661)(cid:28674)(cid:28681)(cid:28664). 6co2+6h2o+3h2s---c6h12o6+3h2so4 ecological mystery: long-term study of sea otter population along aleutians. The normal prey diminished, so their prey go smaller and smaller. One orca must eat a lot of sea otters to live.
